Diabetic retinopathy is caused by changes in the blood vessels of the retina. It is the most common diabetic eye disease and a leading cause of blindness in American adults.
In some people with diabetic retinopathy, blood vessels may swell and leak fluid. In other people, abnormal new blood vessels grow on the surface of the retina. The retina is the light-sensitive tissue at the back of the eye. A healthy retina is necessary for good vision.
If you have diabetic retinopathy, at first you may not notice changes to your vision. But over time, diabetic retinopathy can get worse and cause vision loss. Diabetic retinopathy usually affects both eyes.
Better control of blood sugar levels slows the onset and progression of diabetic retinopathy.
For all of the NEI information on this topic, please visit the following webpage:
Facts About Diabetic Retinopathy
For more information from other health sites, please visit the following webpages:
PubMed Health, Diabetes and Eye Disease
American Academy of Ophthalmology, What is Diabetic Retinopathy
The NEI Eye Health Organizations Database is a tool can that help you find sources of eye health-related information for the public.
NEI Eye Health Organization Database, Keyword = Diabetic Eye Disease